76121000777 has 2 divisors, whose sum is σ = 76121000778. Its totient is φ = 76121000776.

The previous prime is 76121000773. The next prime is 76121000831. The reversal of 76121000777 is 77700012167.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42626144521 + 33494856256 = 206461^2 + 183016^2 .

It is a cyclic number.

It is not a de Polignac number, because 76121000777 - 2² = 76121000773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76121000777.

It is not a weakly prime, because it can be changed into another prime (76121000771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38060500388 + 38060500389.

It is an arithmetic number, because the mean of its divisors is an integer number (38060500389).

Almost surely, 2^76121000777 is an apocalyptic number.

It is an amenable number.

76121000777 is a deficient number, since it is larger than the sum of its proper divisors (1).

76121000777 is an equidigital number, since it uses as much as digits as its factorization.

76121000777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28812, while the sum is 38.

The spelling of 76121000777 in words is "seventy-six billion, one hundred twenty-one million, seven hundred seventy-seven", and thus it is an aban number.